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Segment Information - Summary of Segment Information (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of operating segments [line items] |  |  |
Revenue | ₩ 500,845 | ₩ 725,516 | ₩ 463,618
Segment operating profit | 85,384 | 160,367 | 104,708
Operating Segments |  |  |
Disclosure of operating segments [line items] |  |  |
Segment revenue | 579,821 | 815,372 | 533,428
Revenue | 500,845 | 725,516 | 463,618
Depreciation/Amortization | 9,233 | 7,658 | 7,062
Segment operating profit | 85,384 | 160,367 | 104,708
Operating Segments | Online |  |  |
Disclosure of operating segments [line items] |  |  |
Segment revenue | 90,832 | 96,487 | 107,326
Revenue | 76,989 | 81,017 | 89,257
Depreciation/Amortization | 1,725 | 1,436 | 1,349
Segment operating profit | 34,211 | 44,107 | 45,832
Operating Segments | Mobile |  |  |
Disclosure of operating segments [line items] |  |  |
Segment revenue | 465,026 | 697,736 | 404,362
Revenue | 405,676 | 629,604 | 358,771
Depreciation/Amortization | 2,699 | 2,158 | 1,873
Segment operating profit | 55,371 | 122,107 | 58,357
Operating Segments | Others |  |  |
Disclosure of operating segments [line items] |  |  |
Segment revenue | 23,963 | 21,149 | 21,740
Revenue | 18,180 | 14,895 | 15,590
Depreciation/Amortization | 4,809 | 4,064 | 3,840
Segment operating profit | (4,198) | (5,847) | 519
Inter- Segment Eliminations |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | (78,976) | (89,856) | (69,810)
Inter- Segment Eliminations | Online |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | (13,843) | (15,470) | (18,069)
Inter- Segment Eliminations | Mobile |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | (59,350) | (68,132) | (45,591)
Inter- Segment Eliminations | Others |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | ₩ (5,783) | ₩ (6,254) | ₩ (6,150)

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